/*
 * TEC Web3 Theme - Modern Futuristic Theme
 * Dark mode with purple/neon accents
 */


/* ============================================
   CSS Variables & Reset
   ============================================ */
:root {
    --color-bg: #0a0a0f;
    --color-bg-alt: #12121a;
    --color-bg-card: #1a1a2e;
    --color-bg-card-hover: #222240;
    --color-surface: #16213e;
    --color-primary: #6c2bd9;
    --color-primary-dark: #4a1a9e;
    --color-primary-light: #8b5cf6;
    --color-accent: #a855f7;
    --color-accent-cyan: #22d3ee;
    --color-accent-pink: #ec4899;
    --color-text: #e2e8f0;
    --color-text-muted: #94a3b8;
    --color-text-light: #ffffff;
    --color-border: rgba(108, 43, 217, 0.3);
    --color-glow: rgba(108, 43, 217, 0.4);
    --color-glow-cyan: rgba(34, 211, 238, 0.3);
    --gradient-primary: linear-gradient(135deg, #6c2bd9, #a855f7);
    --gradient-hero: linear-gradient(135deg, rgba(10, 10, 15, 0.85), rgba(22, 33, 62, 0.7));
    --gradient-accent: linear-gradient(135deg, #6c2bd9, #22d3ee);
    --shadow-card: 0 4px 20px rgba(108, 43, 217, 0.15);
    --shadow-card-hover: 0 8px 30px rgba(108, 43, 217, 0.3);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Base Styles
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Animated background grid */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(108, 43, 217, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(108, 43, 217, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: -1;
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-accent);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 80px 0;
}

@media (max-width: 768px) {
    .section-padding {
        padding: 50px 0;
    }
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-light);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    margin: 16px auto 0;
    box-shadow: 0 0 20px var(--color-glow);
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.8rem;
    }
}

/* ============================================
   Header / Navigation
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Branding */
.site-branding {
    display: flex;
    align-items: center;
}

.custom-logo-link {
    display: flex;
    align-items: center;
}

.custom-logo {
    max-height: 50px;
    width: auto;
    border-radius: 50%;
    box-shadow: 0 0 20px var(--color-glow);
}

.site-logo-text {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-light);
    text-decoration: none;
}

.logo-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 8px var(--color-glow));
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.main-navigation .nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.main-navigation .nav-menu li a {
    display: inline-block;
    padding: 10px 18px;
    color: var(--color-text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    position: relative;
}

.main-navigation .nav-menu li a::before {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 18px;
    right: 18px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
    transform: scaleX(0);
    transition: transform var(--transition);
}

.main-navigation .nav-menu li a:hover {
    color: var(--color-text-light);
    background: rgba(108, 43, 217, 0.1);
}

.main-navigation .nav-menu li a:hover::before {
    transform: scaleX(1);
}

.main-navigation .nav-menu li.current-menu-item a {
    color: var(--color-primary-light);
}

/* Hamburger toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
    z-index: 1001;
}

.nav-toggle-bar {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--color-text-light);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 900px) {
    .nav-toggle {
        display: flex;
    }

    .main-navigation {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        padding: 90px 30px 30px;
        transition: right 0.3s ease;
        border-left: 1px solid var(--color-border);
    }

    .main-navigation.active {
        right: 0;
    }

    .main-navigation .nav-menu {
        flex-direction: column;
        gap: 4px;
    }

    .main-navigation .nav-menu li a {
        font-size: 1.1rem;
        padding: 14px 18px;
        width: 100%;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 70px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.5;
    filter: brightness(0.5);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 10, 15, 0.6), rgba(22, 33, 62, 0.4));
    z-index: 1;
}

/* Animated gradient orbs */
.hero-section::before,
.hero-section::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    z-index: 0;
    animation: orbFloat 20s ease-in-out infinite;
}

.hero-section::before {
    background: var(--color-primary);
    top: -200px;
    left: -200px;
}

.hero-section::after {
    background: var(--color-accent-cyan);
    bottom: -200px;
    right: -200px;
    animation-delay: -10s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(100px, -80px) scale(1.1); }
    66% { transform: translate(-50px, 60px) scale(0.9); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 40px 20px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    line-height: 1.8;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-primary);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-text-light);
    box-shadow: 0 4px 15px var(--color-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--color-glow);
    color: var(--color-text-light);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-light);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    background: rgba(108, 43, 217, 0.1);
    transform: translateY(-2px);
    color: var(--color-text-light);
}

.btn-lg {
    padding: 18px 42px;
    font-size: 1.1rem;
}

/* ============================================
   Features Section
   ============================================ */
.features-section {
    position: relative;
    background: var(--color-bg-alt);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

/* Glow border on hover */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: var(--gradient-primary);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card-hover);
    background: var(--color-bg-card-hover);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 10px var(--color-glow));
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 14px;
    color: var(--color-text-light);
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 550px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(108, 43, 217, 0.1), transparent 70%);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    position: relative;
}

.cta-section p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 36px;
    position: relative;
}

.cta-section .btn {
    position: relative;
}

@media (max-width: 768px) {
    .cta-section h2 {
        font-size: 1.8rem;
    }
}

/* ============================================
   Page Content
   ============================================ */
.page-content {
    padding-top: 120px;
    min-height: 60vh;
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 16px;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    box-shadow: 0 0 20px var(--color-glow);
}

.page-content p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.page-content h2,
.page-content h3 {
    margin-top: 40px;
    margin-bottom: 16px;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding-top: 60px;
    position: relative;
    overflow: hidden;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: var(--gradient-primary);
    box-shadow: 0 0 30px var(--color-glow);
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-brand .logo-icon {
    font-size: 2rem;
}

.footer-logo {
    width: 128px;
    height: 128px;
    border-radius: 50%;
    box-shadow: 0 0 12px var(--color-glow);
    display: inline-block;
    vertical-align: middle;
    margin-right: 8px;
}

.footer-brand .logo-text {
    font-size: 1.3rem;
    display: inline-block;
    margin-left: 10px;
}

.footer-tagline {
    color: var(--color-text-muted);
    margin-top: 12px;
    font-size: 0.9rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: 16px;
}

.footer-menu {
    display: flex;
    list-style: none;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-menu li a {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.footer-menu li a:hover {
    color: var(--color-primary-light);
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-menu {
        justify-content: center;
    }
}

/* ============================================
   Responsive Utilities
   ============================================ */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .btn-lg {
        padding: 14px 32px;
    }
}

/* Selection */
::selection {
    background: var(--color-primary);
    color: var(--color-text-light);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}